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watchdog: at91rm9200: add DT support

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Add DT support for at91rm9200_wdt.

Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
This commit is contained in:
Joachim Eastwood 2013-02-14 23:02:29 +01:00 • committed by Wim Van Sebroeck
parent c1fd5f6402
commit a6a1bcd370
3 changed files with 19 additions and 1 deletions
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9
Documentation/devicetree/bindings/watchdog/atmel-at91rm9200-wdt.txt Normal file
View file

@ -0,0 +1,9 @@
Atmel AT91RM9200 System Timer Watchdog
Required properties:
- compatible: must be "atmel,at91sam9260-wdt".
Example:
watchdog@fffffd00 {
compatible = "atmel,at91rm9200-wdt";
};

2
drivers/watchdog/Kconfig
View file

@ -117,7 +117,7 @@ config ARM_SP805_WATCHDOG
config AT91RM9200_WATCHDOG config AT91RM9200_WATCHDOG
tristate "AT91RM9200 watchdog" tristate "AT91RM9200 watchdog"
depends on ARCH_AT91RM9200 depends on ARCH_AT91
help help
Watchdog timer embedded into AT91RM9200 chips. This will reboot your Watchdog timer embedded into AT91RM9200 chips. This will reboot your
system when the timeout is reached. system when the timeout is reached.

9
drivers/watchdog/at91rm9200_wdt.c
View file

@ -24,6 +24,8 @@
#include <linux/types.h> #include <linux/types.h>
#include <linux/watchdog.h> #include <linux/watchdog.h>
#include <linux/uaccess.h> #include <linux/uaccess.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <mach/at91_st.h> #include <mach/at91_st.h>
#define WDT_DEFAULT_TIME 5 /* seconds */ #define WDT_DEFAULT_TIME 5 /* seconds */
@ -252,6 +254,12 @@ static int at91wdt_resume(struct platform_device *pdev)
#define at91wdt_resume NULL #define at91wdt_resume NULL
#endif #endif
static const struct of_device_id at91_wdt_dt_ids[] = {
{ .compatible = "atmel,at91rm9200-wdt" },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, at91_wdt_dt_ids);
static struct platform_driver at91wdt_driver = { static struct platform_driver at91wdt_driver = {
.probe = at91wdt_probe, .probe = at91wdt_probe,
.remove = at91wdt_remove, .remove = at91wdt_remove,
@ -261,6 +269,7 @@ static struct platform_driver at91wdt_driver = {
.driver = { .driver = {
.name = "at91_wdt", .name = "at91_wdt",
.owner = THIS_MODULE, .owner = THIS_MODULE,
.of_match_table = of_match_ptr(at91_wdt_dt_ids),
}, },
}; };